A circular wheel is aligned in a rotational plane and has a peripheral outfacing surface symmetrical about the plane of rotational. A center line of the width of the peripheral outfacing surface is sinusoidal around the wheel. The wheel may have a central hub, a rim, a medial wheel structure between the hub and the rim, and a tire mounted on the rim. The outfacing surface may be that of the hub, the medial wheel structure, the rim, or the tire depending on the application.

A circular wheel is aligned in a rotational plane and has a peripheral outfacing surface symmetrical about the plane of rotational. A center line of the width of the peripheral outfacing surface is sinusoidal around the wheel. The wheel may have a central hub, a rim, a medial wheel structure between the hub and the rim, and a tire mounted on the rim. The outfacing surface may be that of the hub, the medial wheel structure, the rim, or the tire depending on the application.

An external runflat apparatus for a guide wheel system of a monorail transport system. The external runflat apparatus includes a hub member and a tread member. The tread member is connected to the hub member and includes a base member and a covering over the base member.

A bicycle rim includes a radially outer peripheral part, a radially inner peripheral part, at least one first slanting member, and at least one intermediate member. The at least one first slanting member radially extends between the radially outer peripheral part and the radially inner peripheral part in a first direction slanted with respect to a radial direction of the bicycle rim as viewed in an axial direction of the bicycle rim. The at least one intermediate member is disposed between the radially outer peripheral part and the radially inner peripheral part.

A bicycle rim includes a radially outer peripheral part, a radially inner peripheral part, at least one first slanting member, and at least one intermediate member. The at least one first slanting member radially extends between the radially outer peripheral part and the radially inner peripheral part in a first direction slanted with respect to a radial direction of the bicycle rim as viewed in an axial direction of the bicycle rim. The at least one intermediate member is disposed between the radially outer peripheral part and the radially inner peripheral part.

A bicycle rim comprises a base member, a cover member, and a spoke attachment member. The base member includes a truss structure that defines at least one opening. The cover member at least partly covers the at least one opening of the base member. The spoke attachment member is a separate member from the base member and the cover member. The spoke attachment member is non-rotatably attached to the base member.

A preform for fabricating a wheel rim and a method of making a preform is provided. The preform includes a main section and at least one secondary section, each section being formed from composite materials, such as triaxially braided composite material that includes fibers oriented in at least three directions. The main section forms at least part of a lateral section of the preform and the secondary section forms at least part of a radial portion of the preform, the radial portion of the preform being generally perpendicular to the lateral section of the preform. The preform is fabricated from a plurality of composite layers, at least some being custom composite layers having a plurality of axial fibers interwoven intermittently with substantially consistent first and second sets of biased fibers. In some embodiments, the preform is initially fabricated in an intermediate configuration prior to being moved to a final configuration.

The present invention provides a method for color register spraying of a hub, which includes machining and turning for glossy finish after spraying a black paint on the surface of a hub, and then spraying a color transparent paint onto the hub. The method provided by the invention achieves a spraying-based color register effect through spraying of the color transparent paint, which greatly improves the production efficiency and is available for batch production.

The present invention provides a method for color register spraying of a hub, which includes machining and turning for glossy finish after spraying a black paint on the surface of a hub, and then spraying a color transparent paint onto the hub. The method provided by the invention achieves a spraying-based color register effect through spraying of the color transparent paint, which greatly improves the production efficiency and is available for batch production.

The present invention relates to a method for producing dirt-repellent coatings on metal surfaces, more particularly on wheel rims, wherein an optionally precoated metal surface has applied to it a coating material composition (K) which comprises a) at least one polyhydroxyl group-containing component (A), b) at least one component (B) having on average at least one isocyanate group and having on average at least one hydrolyzable silane group of the formula (I)

XSiR.sup.3.sub.sG.sub.3-s(I) where G=identical or different hydrolyzable groups, X=organic radical, R.sup.3=alkyl, cycloalkyl, aryl, or aralkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, with Ra=alkyl, cycloalkyl, aryl, or aralkyl, s=0 to 2, c) at least one phosphorus- and nitrogen-containing catalyst (D) for the crosslinking of silane groups, and d) at least one catalyst (Z) for the reaction of the hydroxyl groups with the isocyanate groups,
which comprises the catalyst (Z) being selected from the group of zinc and bismuth carboxylates, of aluminum, zirconium, titanium and/or boron chelates, of inorganic, tin-containing catalysts, and of mixtures thereof.

The present invention further provides the coatings obtainable by this method and also the use thereof.